HOME | DD
Supa-Monky — Circle Collision Test
Published: 2007-06-01 15:10:27 +0000 UTC; Views: 7671; Favourites: 57; Downloads: 146
Redirect to original
Description
I added some more code into my circle collision, now its super awsome!*UPDATE*
You can now create balls to.
Related content
Comments: 44
ack! added too many balls!!!!! Now just looks like bubbling soda...and i cannot stop it!!!!!!
👍: 0 ⏩: 0
It's really good. I had to make something similar to this. I made each circle find out the angle each one collided at and then pushed them both back across that angle. E.g if one was above the other it would be 90 degs and push them both away across the Y axis. But it seems to be very slow on the collision detection, how did you do yours?
👍: 0 ⏩: 1
i used pythagorus to calculate the distance between the balls, then checked if it was smaller than the raduis's combined. Then instead of using sin and cos and having to calculate an angle i just use the rules.
xd = p2.x - p1.x
yd = p2.y - p1.y
dis = Math.sqrt(xd*xd+yd*yd)
if(dis < p1.r+p2.r){
force = p1.r+p2.r-dis
p1.vx -= xd/dis*force
p1.vy -= yd/dis*force
p2.vx += xd/dis*force
p2.vy += yd/dis*force
}
Thats the simple version, though mines more optimised
👍: 0 ⏩: 1
So kind of like verlet integration, with the distance of the combined radius'?
👍: 0 ⏩: 0
the balls wont stop bumpin into each other causin MAJOR k-os, 
THEY WONT STOP!!!!!!!!!!!!!!!!!!!!!!
👍: 0 ⏩: 0
if you create like 20 - 30 balls in the upper corner right in a row...it all collides and makes a perpetual collision machine that never stops...hehe
👍: 0 ⏩: 1
Ooh, add enough balls and one good fling results in perpetual motion
👍: 0 ⏩: 1
Have you got the balls to do it?
👍: 0 ⏩: 1
good work man, sometimes the balls go nuts tho...this for your uber-physics rpg?
👍: 0 ⏩: 2
not really, the collision has some problems when its got constraints with this method
👍: 0 ⏩: 0
nah its using my AS3 physics engine
👍: 0 ⏩: 0
Sick. Sometimes it looks like the balls dont actually collide tho, it looks like it detects they will and take then does the collision anyway, and you dont get totsee the moment when they collide. Maybe its just me seeing things.
👍: 0 ⏩: 1
nah, that actually happens 
👍: 0 ⏩: 0
Haha, that's badasss! Never had so much fun playing with balls. 
Am I allowed to say that?
👍: 0 ⏩: 1
Its impossible to play with it too long
👍: 0 ⏩: 0
i like how you can create a ball ,swing it around so that it can pick up speed, then let it go so that it crashes into the balls at the bottom making a bunch of them shoot into the air as a result
👍: 0 ⏩: 1
I like how you can grab a ball in this one!
I take one and fling it into the pile and the resulting chaos is like a load of spilled ping-pong balls!!
👍: 0 ⏩: 1
zomg u added the add ball thing just like that!??!
👍: 0 ⏩: 1
the adding ball thing? yes
👍: 0 ⏩: 1
Awesome thing!
Maybe add a function to add one yourself?
👍: 0 ⏩: 1